LEX1542 series

  • LEX1542-02 RJ45 to 2km MMF(SC
  • MC LEX1542-15 RJ45 to 15km SMF(SC)MC

Guaranteed operation in a wide range of temperatures from -10°C to 60°C! This product can operate stably in the severest environments.

This is a media converter exclusively for 100M, which interconverts 100BASE-FX signals by optical fiber and UTP 100BASE-TX signals.

It can be used in a wide range of temperatures from -10°C to 60°C. The product realizes miniaturization to the smallest domestic class, and exhibits high resistance to noise and reliability.

The various functions can be changed by the DIP switches, flexibly supporting construction for a wide range of carrier and stand-alone networks.




  • LEX1542-02/15


  • Repeater type media converter (exclusively for 100M), which interconverts 100BASE-TX and 100BASE- FX.
  • Usable in a wide range of temperatures from -10°C to 60°C.
  • No transfer frame control or frame size restriction.
  • With the unit alone, the DIP switches are used to change the settings (eight contacts).
  • Two kinds of installation available: single unit or housed in a rack.
  • For a single unit, power is supplied by the AC adapter.
  • Options such as a magnet, rubber foot, binding band for preventing disconnection of the adapter cord, and PD cabinet fitting included. )
  • Equipped with the LFP function (Link Fault Pass-through function).
  • Advanced ECO mode function (restriction of LED light-on time).


Models LEX1542-02 LEX1542-15
Standards IEEE802.3, IEEE802.3u
Transmission speed 100Mbps(CSMA/CD)
Fiber ports Transceiver 100BASE-FX x1port 100BASE-FX x1port
MMF 2km SC connector 2poles SMF 15km SC connector 2poles
Wavelength 1,310nm MMF 1,310nm SMF/MMF
Output -20~-14dBm MMF62.5/125μm -23.5~-14dBm MMF50/125μm -20~± 0dBm
Receiving sensitivity -31~±0dBm -32~±0dBm
Compatible cable 100BASE-TX UTP cable Cat5 or over
100BASE-FX MMF :62.5/125μm/50/125μm SMF : 9/125μm/10/125μm
Communication function link fault pass through(LFP) Advanced Eco mode )
Transmission mode repeater mode
Rated input voltage/frequency AC power AC90~240V 50/60Hz
Rated input voltage
DC power
Maximum input current 2A
Maximum power consumption 3.0W
User Environmental Operating Temperature/Humidity -10℃~60℃/0~95% (no condensation)
-20℃~70℃/0~95% (no condensation)
Dimensions 50mm(W) ×74mm(D) ×20mm(H)
without detachable parts
Physical specificatio Maximum 110g (without AC
Electrical Approvals Electromagnetic Interference VCCI class A
ISO Environmental Compliance RoHS
Reliability MTBF:453,332h(25℃)
Accessories AC adapter supports PSE、 magnet, rubber foot covers、 installation guide、product warranty、 Adapter cable falling prevention banding band、 PD Panel mounting bracket、 rack mounting screws

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